The Original Tumbler Rolling Knife Sharpener™ - Knife Sharpening Made Easy ** ATTENTION ** My liquidation items can be new or may be open box but is in excellent condition. Please review photos and ask questions if you have a concern. A Finer Edge: A proprietary stainless steel helix disc on the other end of the kitchen knife sharpener removes the burr of your knife’s edge after the base sharpening. Simple, But Effective: Simply choose your angle and use the magnetic knife holder to secure your blade. Then, roll the sharpening disc back and forth until sharp. 15 & 20 Degree Angle Sharpening: Easily & quickly sharpen traditional and specialty blades.